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C_(21) Steroidal Glycosides from Acidic Hydrolysate of Cynanchum otophyllum 被引量:1
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作者 Yi-bin Zhao Quan-shui Fan +2 位作者 Gui-li Xu Zi-liang Feng Xiao-jiang Hao 《Chinese Herbal Medicines》 CAS 2014年第4期319-323,共5页
Objective To investigate the structures of compounds in the rhizome of Cynanchum otophyllum(Asclepiadaceae), and to find new C21 steroidal glycosides. Methods The ethyl acetate extract from the rhizome was subjected... Objective To investigate the structures of compounds in the rhizome of Cynanchum otophyllum(Asclepiadaceae), and to find new C21 steroidal glycosides. Methods The ethyl acetate extract from the rhizome was subjected to acidic hydrolysis and isolated by column chromatography; The structures of the purified compounds were determined by spectral methods. Literature search confirmed whether those compounds were of new structures. Results Three compounds were isolated and their structures were deacetylmetaplexigenin 3-O-β-D-oleandropyranosyl-(1→4)-α-D-oleandropyranosyl-(1→4)-α-D-oleandropyranoside(1), deacetylmetaplexigenin 3-O-α-D-oleandropyranosyl-(1→4)-β-D-thevetopyranosyl-(1→4)-α-D-oleandropyranoside(2), and deacetylmeta-plexigenin 3-O-β-D-cymaropyranosyl-(1→4)-α-D-oleandropyranoside(3), respectively. Conclusion Compounds 1-3 are new compounds. 展开更多
关键词 Asclepiadaceae Cynanchum otophyllum C21 steroidal glycoside
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